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No. 408,761. Patented Aug. 13, 1889.

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V NEEDLE BATH WATER SUPPLY VALVE.

No. 408,761. Patented Aug. 13,- 1889.

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BENJAMIN 0. SMITH, OF BROOKLYN, ASSIGNOR TO FRED. ADEE 8500., OF

' NEWV YORK, N. Y.

NEEDLE-BATH WATER-SUPPLY VALVE.

SPECIFICATION forming part of Letters Patent N0. 408,761, dated August 13, 1889.

Application filed December 19, 1888. Serial No. 294,060. (No model.)

To all whom it may concern: 7

Be it known that I, BENJAMIN 0. SMITH, a resident of the city of Brooklyn, Kings county, New York, have invented certain new and useful Improvements in Needle-Bath ater- Supply Valves, of which the following is a specification.

In the needle-baths heretofore constructed there has been danger of hot or scalding water being thrown upon the bather when the cold-water supply was turned off before turning off the hot water. I It is the object of my invention to provide a Valve (for cold water) in which the full supply of water passing through the valve will not be shut 01f when the valve is closed, so that if the cold-water valve be closed before the hot-water valve a certain amount of 'cold water will be mixed with the passing hot water to prevent injuring the bather.

Another object of my invention is to provide an improved check-valve to prevent the water from the hot-water-supply pipe rushing into the cold-water-supply pipe, and vice versa.

The invention consists in the details of improvement and the combination of parts, that will be more fully hereinafter set forth.

Reference is to be had to the accompanying drawings, forming part of this specification, in which- Figure 1 is a side elevation of a system of supply-pipes for a needle-bath containing my improvements. Fig. 2 is an enlarged detail sectional View of my improved valves, and Fig. 3 is a horizontal section on the line 0 c in Fig. 2.

I11 the accompanying drawings, theletterA represents a distributing-pipe that is connected by pipes B with the different jets and the like of a bath. The distributing-pipe A is connected by a pipe or coupling a with a mixing pipe D, into which cold water from a pipee and hot water from apipe F may pass. The above arrangement of pipes is merely given as an example of supply-pipes for a bath and forms no part of my present invention. It may therefore be changed to suit the requirements.

My improved valve for regulating the flow of the cold water is set in the length of pipe E. Said valve is constructed as follows:

G is a chamber that has side openings b for the passage of water. Within the valvechamber G, and extending longitudinally of said valve-chamber at about the center thereof, is a diaphragm orvalve-seat II. This diaphragm or valve-seat H is connected with the inner wall of the chamber G and forms a partition therein, said partition being about in line with the center of the end openings 1) of said chamber. The diaphragm or valve-seat H has a large central aperture (Z for the pas sage of water.

I is a valve-plunger that is carried by a screw-rod J, projecting from the side of the valve-chamber G, and passing through a stuffing-box or the like L, as in ordinary valves. By in rning this screw-rod J the valve-plunger I will be pressed against the diaphragm or valve-seat H to stop the -flow of water through the opening d in said valve-seat. As shown in Fig. 3, the diaphragm or valve-seat H, at opposite sides thereof, is connected with the opposite walls of the chamber Gby partitions e f, that are about at right angles to the diaphragm or valve-seat H. These partitions e f extend across the chamber G at right angles to the direction of flow of the water through the pipeE, and thereby tend to cause the water to press against the diaphragm H and valve-plunger I, so that the water will pass through the opening cl in said diaphragm.

In order that the passage of water through the, valve-chamber G can take place even when the valve-plunger I is upon its seat H, I provide apertures g h in the partitions e f, as clearly shown in Fig. 3. I also provide a series of small holes t in the diaphragm or partition H, at the sides of thevalve-plunger I, as clearly shown in Fig. 2. By this construction a certain amount of water, regulated by the size and number of the openings 9 h 2', will be permitted to pass through the valve-chamber at all times. When it is desired to increase the supply of passing water,

or to permit a full head of water to pass through the valve, the ValVeplunger I is moved from the diaphragm 0r Valve-seat H the desired extent. The cold water passes from the pipe E and valve G into the pipe D, and from thence through the pipe at to the Various pipes B and jets to be supplied, a quantity of cold water passing through the valve at all times.

' The hot water that passes. to the pipes B through the pipe F may be regulated in its flow by means of an ordinary valve M of any desired construction. \Vhen the hot water is turned on and passes to the pipe D, it is there met by cold water from the pipe E, whether the valve-plunger I is upon its seat or not. It now the cold water be suddenly shut off by seating the valve-plunger I, supposing the valve to have been open withoutshutting oit the hot-water supply, the hot water that reaches the pipe D will be met by the cold water from the pipe E, that is permitted to pass through the openings g h i, so as to temper said hot water and prevent scalding or injury to the bather.

In order to prevent the supply of hot water passing from the pipe F entering the pipe E, and passing thence through said pipe to the cold-Water supply, and to prevent the cold water from the pipe E passing through the pipe D to the pipe F, and thence to the hot-water supply, I provide a check-valve N in a chamber O, substantially similar to the chamber G. IVithin the chamber 0 is a longitudinal diaphragm II and cross-partitions c f, similar to those in the Valve G H I. The diaphragm or valve-seat H is provided with a central opening (Z for the passage of Water; but there are no openings g h tin the partitions, as there are in the partitions e f II in the valve G II I. The valve N is provided with a vertical stud j, that passes into bearings in the guide-block I, provided in the cap m of the chamber 0, as shown in Fig. 2. The Valve N has a number of downwardly-projecting studs 02., that pass through the opening (I in the partition or diaphragm H. By means of these studs j n the valve N is guided, so that it may always come to rest upon its seat II to close the opening I). When water passes through the pipe E in the direction of the arrow in the upper part of Fig. 2, it will raise the valve M from its seat and flow thence onward to supply the bath; but if hot water from the pipe F should pass into the pipe E and strive to flow in the reverse direction to said arrow it would press upon the valve N and force it against its seat H, thereby automatically closing the valve and preventing the passage of the hot water backwardly through the pipe E.

In the valve-chamber O in the pipe F is a valve of similar construction to that just described with reference to the pipe E. In said pipe F the valve N will permit the passage of hot water toward the mixing-pipe D, but will prevent the passage of cold water in the reverse direction, said cold water seating the valve N and automatically preventing the passage of the cold water in that direction.

If preferred, the holes 2' could he made in the valve-plunger I, as shown in dotted lines in Fig. 2, instead of in'the diaphragm II, as described.

Having now described my invention, what I claim is- The mixing-pipe D, outlet-pipe a, and hot and cold water supply pipes E F, connected with the pipe D, combined with a check-valve, substantially as described, in each pipe E and F, whereby the water from one pipe E orF is prevented passing along the other pipe to mix with the water therein, substantially as specified.

BENJAMIN C.- SMITH.

Witnesses:

THORNLEY DioKsoN, T. F. BOURNE. 

